A car is moving in the positive direction along a straight highway and accelerates at a constant rate while going from point A to point B. If the acceleration is positive, increasing the speed of the car, when does the position where the average speed equals the instantaneous speed occur during the time interval from A to B? Assume the time interval is T
a. T/2 from the start of the interval b. before T/2 from the start of the interval
c. after T/2 from the start of the interval d. It depends on the speed at the start of the time interval.
a
You might also like to view...
A series RLC circuit has a 150-? resistor, a 6.00-mH inductor and a 0.200-?F capacitor connected across a 120-V rms ac source at 15.0 kHz. What is the phase angle of the circuit?
A) 47.3° B) 0° C) 45.0° D) 90.0° E) 73.7°
64,200,000,000 is equal to
a. 6.42 × 10^7. b. 6.42 × 10^?7. c. 6.42 × 10^10. d. 6.42 × 10^?10. e. 1.0 × 10^64.2.
Energy in the Electric Field: At a distance d from a point charge Q, the energy density in its electric field is u. If we now go to a distance d/2 from the charge, what is the energy density at the new location?
A. 16u
B. 8u
C. 4u
D. 2u
E. u
__________is the hazy band of light that circles our sky, produced by the glow of our Galaxy
A) Messier 83 B) Cosmos Redshift 7 C) The Milky Way D) The Pinwheel